Prizm technology excels in bright conditions and improves the colour and contrast of your vision to help you see in more detail. The durable O-Matter frame is built to last, making the Ojector a worthwhile investment for your outdoor adventures.Prizm Lens - enhanced colour and contrast for full-detailed visionStylish and versatile designDurable and comfortable O-Matter frameFrame colour: Matt BlackLens colour: Prizm GreyLight transmission: 17%Light conditions: Bright light